https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114682
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2024-04-11
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note it isn't necessarily always an improvement. It's also not really PRE
but FRE when you do PHI translation. There's an argument that we should
try PHI translation in FRE to at least catch cases like this where
the replacement is simply
# i_3 = PHI <2(4), 0(2), 1(3)>
_12 = (int) i_3;
Note there's also that "frankenstein" phiprop pass which does remotely
similar things.
